22 Maintenance
The OTT netDL has a battery-backed realtime clock. Thus the clock continues to
run with high accuracy, even if power supply fails. The backup battery has a ser-
vice live of approximately 10 years. To some extent, its service life depends on the
time of storage without power supply connected as well as on the existing ambient
t
emperatures.
To ensure correct time under all conditions, we suggest having
the backup battery replaced in factoryevery 5 years.
F
or battery replacement, please contact the OTT repair center, refer to Chapter 23.
The OTT netDL unit does not require any other maintenance.
Never open the housing of the OTT netDL! There are no adjustment or control
elements inside the housing!
23 Repair
In case of device failure, please contact the repair center ofOTT:
OTT Hydromet GmbH
Repaircenter
Ludwigstrasse 16
87437 Kempten · Germany
Phone +49 831 5617-433
Fax +49 831 5617-439
repair@ott.com
Please note: Have a faulty OTT netDL unit checked and/or repaired only by
theOTT repair center. Never attempt to repair the unit yourself! Any repairs or
attempted repairs carried out by the customer will void any warranty.
53
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